What is a Shunt resistor?

A shunt resistor is a resistor used to measure current in electrical circuits. Shunt resistors are also called current shunts because the word shunt means "to shunt" or "to divert". Elements and parts that are mainly used to check the power supply, such as checking the current value and detecting the remaining battery level. A shunt resistor is a reliable way to measure current. Since current is also applied to the shunt resistor, the relationship between the resistance value of the shunt resistor and the voltage drop can be used to calculate an accurate current value. Another feature is that it can be used in places where high current flows. High-current circuits often have thick wires, which can make it difficult to use the clamp-on current measurement method. Accurate and reliable current values can be obtained by using shunt resistors, which are usually low in resistance. However, if a shunt resistor is used in a circuit where a large current is applied, a large amount of heat may be generated. Therefore, it is necessary to consider a cooling device, etc.

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